1-BUD-MOBILE-LEFT Single-Ear Stereo Earbud w/Case 1-BUD-Mobile-Left Stereo Earphone is compatible with most cell phones, MP3 players, tablets, laptops and all kinds of other audio devices. It has a 4-conductor 3.5mm gold-plated plug and is compatible with all iPhone and newer Android model phones. Enjoy exceptional music from your mobile phone with a single earpiece that is designed to mix the audio of both left and right channels into the LEFT earpiece. The play/pause switch allows the user to start/stop music and answer incoming calls. Comes with 3 sizes of eartips, cord clip and a deluxe zippered carrying case. The case has a robust clip to attach to any back-pack, belt-loop, bicycle gear, purse or key chain. Angled eartip helps hold the earpiece in the ear quite comfortably for long periods of time. Equally suited for sport use, relaxing in a cafe, cramming for an exam, bicycling or any situation where you need to keep your other ear open to your surroundings.